It’s widely known that a smoke detector is a good ionizing radiation source, as they contain a small amount of americium-241, a side product of nuclear reactors. But what about other sources? [Carl ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. The discovery of nuclear fission in ...

(AP) --The fuel rods at all six reactors at the stricken Fukushima Dai-ichi complex contain plutonium - better known as fuel for nuclear weapons. While plutonium is more toxic than uranium, other ...

After 50 years of searching, physicists have spotted the fingerprint of radioactive plutonium, revealing the secrets of this complex molecule behind nuclear weapons. Subscribe to read this story ...

Physicists warn that deuterium-tritium fusion reactors could enable secret production of fissile materials, prompting calls ...

Update: Since publication, Jon Schwantes has discovered that a microgram sample of plutonium produced in 1942 by Glen Seaborg’s group at the University of California in Berkeley is also ...

One of the oldest known samples of plutonium has been dug up from a waste trench in Hanford, Wash., near the now-decommissioned nuclear production site along the Columbia River. During the process of ...

Plutonium-239 found inside a broken, rusty safe has been shown to be of historic significance: dating from December 1944 it is the very first weapons-grade plutonium refined at the site, or anywhere ...